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Entry  Sun Mar 14 07:04:30 2021, OH, Sunday 14th March 2021 20x
    Reply  Sun Mar 14 08:16:00 2021, OH PJCS, Sunday 14th March 2021 
Message ID: 199     Entry time: Sun Mar 14 08:16:00 2021     In reply to: 198
Author: OH PJCS 
Subject: Sunday 14th March 2021 
> 08:07 Realised the correlation scalers hadn't been enabled again. Have enabled them now. R56_151
> 
> Looking through the merger messages from the nightshift we see bad timestamps in FEE 11. This FEE does not have any scalers going into it.
> It is also the least noisy FEE in the back DSSD
> 
> MERGE Data Link (20510): bad timestamp  10 3 0xc2b77eff 0x037a3b92 0x000017f7f37a3b92 0x166c17f7f37a3b92 0x166c17f7f3877262
> MERGE Data Link (20510): bad timestamp  10 3 0xc2827f3a 0x037aa122 0x000017f7f37aa122 0x166c17f7f37aa122 0x166c17f7f3877262
> 
> 09:01 System wide checks
> 
> 		 Base 		Current 	Difference
> aida07 fault 	 0x8c74 : 	 0x8c77 : 	 3  
> White Rabbit error counter test result: Passed 11, Failed 1
> 
> Understand the status reports as follows:-
> Status bit 3 : White Rabbit decoder detected an error in the received data
> Status bit 2 : Firmware registered WR error, no reload of Timestamp
> Status bit 0 : White Rabbit decoder reports uncertain of Timestamp information from WR
> 
> 			 Base 		Current 		Difference
> aida07 fault 	 0x2 : 	 0x5 : 	 3  
> FPGA Timestamp error counter test result: Passed 11, Failed 1
> If any of these counts are reported as in error
> The ASIC readout system has detected a timeslip.
> That is the timestamp read from the time FIFO is not younger than the last
> 
>      Statistics - attachment 1
>      Temperature - attachment 2
>      Bias and leakage current - attachment 3
It might be worth considering decreasing the time between the flushing of slower FEEs. Is the Merger waiting for the slower data and causing ‘deadtime’ in the faster ones. Perhaps consider this as a 
balancing across the system? 
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